[pve-devel] applied: [PATCH ifupdown2] fix #5009: avoid waiting for stdout eof of /etc/network/ scripts

[Thomas Lamprecht]

On 19/12/2023 10:22, Friedrich Weber wrote:
> Previously, PVE (7 and 8) hosts would hang at boot if both ntpsec and
> ntpsec-ntpdate are installed. The root cause for the hang is an
> unfortunate interaction between ntpsec, ntpsec-ntpdate and the PVE
> ifupdown2 package. The hang happens because ntpsec-ntpdate installs a
> hook /etc/network/if-up.d/ntpsec-ntpdate that blocks until networking
> is available if ntpsec is installed. Previously, ifupdown2 would wait
> for the hook to terminate, so networking would never become available,
> resulting in a deadlock. See the bug report [0] for more information.
> 
> With this patch, ifupdown2 runs the hook in the background and does
> not wait for it to terminate, thus resolving the deadlock.
> 
> This patch was already applied upstream [1]. Backport it to make it
> available before the next upstream release.
> 
> [0] https://bugzilla.proxmox.com/show_bug.cgi?id=5009
> [1] https://github.com/CumulusNetworks/ifupdown2/pull/274
> 
> Signed-off-by: Friedrich Weber <f.weber at proxmox.com>
> ---
> 
> Notes:
>     Tested on PVE 8:
>     * installed ntpsec and ntpsec-ntpdate
>       reboot without `quiet` -> boot hangs at networking
>     * installed patched ifupdown2, ntpsec, ntpsec-ntpdate
>       reboot -> boot ok
> 
>  debian/patches/series                         |  1 +
>  ...waiting-for-stdout-eof-of-etc-networ.patch | 44 +++++++++++++++++++
>  2 files changed, 45 insertions(+)
>  create mode 100644 debian/patches/upstream/0001-scheduler-avoid-waiting-for-stdout-eof-of-etc-networ.patch
> 
>

applied, thanks!